Remove dangling reference to the dRuby home page from the overview

The "(see References)" note pointed at a section that does not exist in
the README, and the claim that the full package must be downloaded
separately is obsolete now that drb ships as a gem.

#32

Author: hsbt

README.md

@@ -4,12 +4,6 @@ dRuby is a distributed object system for Ruby.  It allows an object in one
 Ruby process to invoke methods on an object in another Ruby process on the
 same or a different machine.
 
-The Ruby standard library contains the core classes of the dRuby package.
-However, the full package also includes access control lists and the
-Rinda tuple-space distributed task management system, as well as a
-large number of samples.  The full dRuby package can be downloaded from
-the dRuby home page (see *References*).
-
 For an introduction and examples of usage see the documentation to the
 DRb module.
 

lib/drb/drb.rb

@@ -17,12 +17,6 @@
 # Ruby process to invoke methods on an object in another Ruby process on the
 # same or a different machine.
 #
-# The Ruby standard library contains the core classes of the dRuby package.
-# However, the full package also includes access control lists and the
-# Rinda tuple-space distributed task management system, as well as a
-# large number of samples.  The full dRuby package can be downloaded from
-# the dRuby home page (see *References*).
-#
 # For an introduction and examples of usage see the documentation to the
 # DRb module.
 #